Electro Hardware 1377M12F21256 Hex Standoff 2-56 2.5in

Product Description

The ELECTRO HARDWARE 1377M12F21256 is a male-female hex circuit board standoff designed to space and support printed circuit boards in electronic assemblies. The standoff features a 2-56 thread size with a male thread on one end and a female threaded bore on the other, allowing boards to be stacked or mounted at a fixed distance from a panel or chassis. The body is steel with a zinc-plated finish meeting ASTM B633 Type 1 and QQ-S-633 standards. The overall length is 2.5 inches, the width across flats is 0.1875 inches (3/16 inches), and the thread depth is 3/16 inches. These standoffs are installed by electronics technicians and control board assemblers in commercial and industrial applications.

This standoff is suited for use in control panel assemblies, HVAC control boards, electrical enclosures, and other applications where circuit boards require rigid, fixed-height mounting. The hex body shape allows installation and removal with standard hex drivers or nut drivers. The zinc plating provides corrosion resistance for indoor and light-duty environments. Its 2-56 thread size fits standard 2-56 machine screw hardware commonly used in PCB mounting applications across residential and commercial electronic controls.

Key Features

• Male-female configuration allows PCB stacking or chassis mounting in a single standoff
• 2-56 thread size compatible with standard PCB mounting hardware
• Hex body shape accepts nut driver or hex wrench for installation and removal
• Steel construction with zinc-plated finish meets ASTM B633 Type 1 and QQ-S-633 standards
• Overall length of 2.5 inches provides consistent board-to-surface spacing
• Thread length of 5/32 inches on the male end with 3/16-inch thread depth on the female end

Compatibility

Designed as an OEM-style replacement or new-installation standoff for circuit board assemblies using 2-56 machine screw hardware in control panels, HVAC boards, and electronic enclosures.

Installation Notes

Installation is typically performed by electronics technicians or licensed electricians during control board assembly or replacement. Power down and de-energize the equipment fully before working on any circuit board assembly. Use a appropriately sized nut driver or hex wrench on the 3/16-inch across-flats body to avoid rounding the hex. Follow applicable NEC guidelines when installing standoffs inside electrical enclosures.